Games played by Zhengrui Jiao (Jinan, China) in this fuseki

3
524
1
4bw
+ 2
= 1
-1 
?  

1Kang Tingrui - Jiao Zhengrui
2Huang Yufeng - Jiao Zhengrui
3Hu Long - Jiao Zhengrui
4Jiao Zhengrui - Huang Shengming